Ferrum Audio OOR Headphone Amplifier

OOR is a ground-up design without precedent, created from a profound exploration of analogue audio in its purest form. Understated looks married with sophisticated power delivery and amplifier technologies, delivering ultra-low distortion, huge dynamics and unrivaled detail. For those who want to go even further in unleashing unheard musicality, OOR is, of course, designed to pair perfectly with the Hypsos Hybrid Power System.

OOR will redefine the category of headphone amplifiers. OOR will drive any headphones effortlessly to the max of their potential, while preserving the essence of the music it amplifies. Ultra low distortion, zero fatigue, huge dynamics and unrivaled detail result in ultimate enjoyment. OOR actually makes something that is very difficult to accomplish, seem like the most natural thing on earth.

The most important features are:

• Truly Balanced - the signal path stays truly balanced using the XLR inputs and becomes truly balanced using the RCA inputs.
• Ease of use - only three knobs to control all settings.
• Discrete design - modified Class A/B topology used in discrete power stage.
• Superior control - perfected steering of output transistors making them to instantly deliver full capacity and two-pole compensation scheme. Together with the high current design you get superior control and ultra fast operation over the total bandwidth.
• Enhanced transparency - the whole design is focussed on a balanced and very transparent sound signature, making listening fatigue something of the past.
• Made for Hypsos - while OOR performs very good right out of the box, it is made to excel above and beyond when used together with Hypsos. Using the proprietary Ferrum Power Link connection Hypsos will perform to its absolute maximum, unleashing unheard musicality from the combination with OOR.